body{
    color: #fff !important;
    font-family: 'PingFangSC-Regular', 'helvetica neue', tahoma, 'PingFang SC', 'microsoft yahei', arial, 'hiragino sans gb', sans-serif;
    /*background: #000;*/
}
.test{
    line-height: 30px;
    background: #0f0;
    text-align: center;
}
#backBtn{
    line-height: 30px;
    /*background: #0054e1;*/
    background: #ddd;
    text-align: center;
}
/*---------------头部开始---------------*/
.nav-box{
    height: 74px;
    /*position: fixed;*/
    position: absolute;
    z-index: 5;
    top: 0;
}
.logo{
    line-height: 4rem;
    font-size: 1.5rem;
    letter-spacing: 0.1rem;
}
.nav-center{
    height: 74px;
}
.nav-center .js-nav-link{
    color: #fff;
}
.nav-center:hover .js-nav-link{
    color: #000;
}
.js-nav-language{
    color: #999;
    text-decoration: none!important;
}
.js-nav-language:hover{
    color: #7e7e7e;
}
.nav-center a{
    padding: 0;
    font-weight: bold;
    box-sizing: border-box;
    text-decoration: none;
}
.nav-center li{
    width: 120px;
    line-height: 74px;
    text-align: center;
    box-sizing: border-box;
}
.nav-center .summary{
    height: 0;
    overflow: hidden;
    transition: all 0.4s linear 0s;
}
.nav-center .js-nav-item:hover .summary{
    display: block;
}
.nav-center .summary li{
    line-height: 40px;
}
.nav-center .summary li a{
    text-decoration: none;
    font-weight: lighter;
    color: #737373 !important;
}
.nav-center .summary li a:hover{
    color: #000!important;
}
.navbar-bg .nav-bg{
    width: 100%;
    height: 0;
    background: #fff;
    position: absolute;
    top: 0;
    z-index: -1;
    transition: all 0.4s linear 0s;
    overflow: hidden;
}
/*---------------头部结束---------------*/
/*---------------banner开始---------------*/
.banner{
    text-align: center;
    height: 780px;
    position: relative;
    overflow: hidden;
}
.banner>video{
    height: 100%;
    margin: 0 -100%;
    /*margin-top: -160px;*/
}
.banner-msg{
    position: relative;
    bottom: 50%;
}
.banner-tips{
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
}
.banner-tips>.tips{
    width: 1px;
    height: 2rem;
    border: 1px solid #fff;
    margin: 0 auto;
}
/*---------------banner结束---------------*/
/*---------------腾讯的描述开始---------------*/
.tencent-desc{
    text-align: center;
    padding: 8% 0;
    color: #333;
}
.desc-img>ul{
    width: 100%;
    overflow-x: auto;
}
.desc-img>ul>li{
    /*width: 400px;*/
    /*border: 1px solid #000;*/
    /*padding: 0 8px;*/
    position: relative;
    margin-right: 16px;
    box-sizing: border-box;
}
.desc-img>ul>li:last-child{
    margin-right: 0;
}
@keyframes myflash-width {
    from{
        width: 0;
    }
    to{
        width: 100%;
    }
}
@keyframes myflash-height {
    from{
        height: 0;
    }
    to{
        height: 100%;
    }
}
@keyframes myflash-font {
    from{
        font-size: 1.5rem;
    }
    to{
        font-size: 1.7rem;
    }
}
.desc-img>ul>li:hover .mask{
    animation: myflash-height 0.5s linear 0s;
    background: rgba(0, 46, 255, 0.45);
}
.desc-img>ul>li:hover p{
    font-size: 1.7rem;
    animation: myflash-font 0.5s linear 0s;
}
.desc-img>ul>li .mask{
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    z-index: 1;
    cursor: pointer;
}
.desc-img>ul>li img{
    width: 100%;
}
.desc-img>ul>li p{
    color: #fff;
    font-size: 1.5rem;
    font-weight: bold;
    position: absolute;
    left: 50%;
    top: 50%;
    margin-bottom: 0;
    transform: translate(-50%,-50%);
}
/*---------------腾讯的描述结束---------------*/
/*---------------连接区域link开始---------------*/

.link-area{
    height: 780px;
}
.link-area a{
    text-decoration: none;
    background: #1b1f25;
    box-sizing: border-box;
    position: relative;
    transition: background 0.5s linear 0s;
}
.link-area a:hover{
    background: rgb(4, 84, 217);
}
.link-area .link-tab{
    /*width: 100%;*/
    /*height: 100%;*/
    /*padding-top: 5rem;*/
    position: absolute;
    left: 40%;
    top: 50%;
    transform: translate(-50%,-50%);
}
.link-area .link-box{
    width: 200px;
    padding-left: 2rem;
    box-sizing: border-box;
    /*text-align: center;*/
    color: #fff;
}
.link-area .link-box img{
    width: 15%;
    height: 20px;
}
.link-area .link-box .arrow>img{
    opacity: 0;
    transition: width 0.5s linear 0s;
}
.link-area a:hover .arrow>img{
    width: 30%;
    opacity: 1;
}
.link-area .content-box{
    height: 100%;
}
.content{
    width: 50%;
    height: 50%;
    float: left;
    position: relative;
    overflow: hidden;
}
.content:nth-child(1){
    background: url("./../images/index/index_link_1_1.jpg") no-repeat;
}
.content:nth-child(2){
    background: url("./../images/index/index_link_1_2.jpg") no-repeat;
}
.content:nth-child(3){
    background: url("./../images/index/index_link_1_3.jpg") no-repeat;
}
.content:nth-child(4){
    background: url("./../images/index/index_link_1_4.jpg") no-repeat;
}
.content-box:nth-child(2) .content:nth-child(1){
    background: url("./../images/index/index_link_2_1.jpg") no-repeat;
}
.content-box:nth-child(2) .content:nth-child(2){
    background: url("./../images/index/index_link_2_2.jpg") no-repeat;
}
.content-box:nth-child(2) .content:nth-child(3){
    width: 100%;
    background: url("./../images/index/index_link_2_3.jpg") no-repeat;
}
.content-box:nth-child(2) .content:nth-child(3) .content-text{
    width: 100%;
}
.content-box:nth-child(2) .content:nth-child(3) .content-text img{
    width: 7%;
}
.content-box:nth-child(3) .content:nth-child(1){
    background: url("./../images/index/index_link_3_1.jpg") no-repeat;
}
.content-box:nth-child(3) .content:nth-child(2){
    background: url("./../images/index/index_link_3_2.jpg") no-repeat;
}
.content-box:nth-child(3) .content:nth-child(3){
    background: url("./../images/index/index_link_3_3.jpg") no-repeat;
}
.content-box:nth-child(3) .content:nth-child(4){
    background: url("./../images/index/index_link_3_4.jpg") no-repeat;
}
.content-text{
    position: absolute;
    left: 0;
    bottom: -50px;
    padding: 0 30px;
    cursor: pointer;
}
.content:hover .content-text{
    bottom: 0;
    transition: all 0.5s linear 0s;
}
.content:hover p{
    opacity: 1;
}
.content-text img{
    width: 15%;
    height: 20px;
}
.content-text p{
    font-size: 0.9rem;
    opacity: 0;
}

.link-md{
    position: relative;
    height: 240px;
    padding: 0 20px;
    margin-bottom: 10px;
    /*background: url("./../images/index/link_bg_1.jpg") no-repeat center center;*/
}
.link-md li{
    width: 100%;
    height: 100%;
    overflow: hidden;
    box-sizing: border-box;
    vertical-align: center;
}
.link-md img{
    width: 100%;
    margin: -20% 0;
}
.link-md>div{
    position: absolute;
    left: 10%;
    bottom: 10%;
}
.link-md h4{
    font-weight: bold;
}
.link-md p{
    font-size: 0.8rem;
}
/*---------------连接区域link结束---------------*/
/*---------------resp责任区域开始---------------*/
.resp-area{
    /*height: 620px;*/
    margin: 80px 0;
    padding: 0 20px;
    box-sizing: border-box;
}
.resp-banner-box{
    width: 50%;
}
.resp-banner-box .resp-banner{
    width: 100%;
}
.resp-banner-box .carousel-inner{
    border-radius: 50%;
    overflow: hidden;
}
.resp-banner-box .carousel-caption{
    margin-bottom: 30px;
}
.resp-banner-box .carousel-control-prev,
.carousel-control-next{
    height: 50px;
    top: 45%;
}
.resp-banner-box .resp-banner img{
    height: 620px;
}
.resp-banner-box .resp-banner h5{
    font-size: 1.5rem;
    font-weight: bold;
}

.resp-text{
    width: 50%;
    position: relative;
}
.resp-text>div{
    position: absolute;
    left: 10%;
    top: 35%;
}
.resp-text>div h3{
    color: #000;
    font-weight: bold !important;
}
.resp-text>div p{
    color: #333;
    font-size: 1.3rem;
    font-weight: lighter !important;
    margin: 20px 0;
}
.resp-text>div img{
    width: 45px;
    height: 20px;
}
/*---------------resp责任区域结束---------------*/
/*---------------footerBanner底部banner开始---------------*/
.footer-banner{
    position: relative;
}
.footer-text{
    position: absolute;
    left: 5%;
    top: 18%;
    z-index: 3;
}
.footer-text h3{
    font-weight: bold;
    color: #000;
    /*font-size: 2rem;*/
}
.footer-text p{
    font-size: 1.3rem;
    color: #333;
    margin: 20px 0;
}
.footer-text img{
    width: 45px;
    height: 20px;
}
/*---------------footerBanner底部banner结束---------------*/
/*---------------footer开始---------------*/
.footer-md ul{
    list-style: none;
    padding: 0;
}
.footer-md .card-body{
    padding: 0;
}
.footer-md .card{
    border: none;
}
.footer-md ul li{
    margin: 20px 0;
}
.footer-md ul li a{
    color: #333;
    text-decoration: none;
    font-size: 0.9rem;
}
.footer-md .btn{
    width: 100%;
    text-align: left;
    padding: 0;
    border: none;
}
.footer-md .btn:focus, .btn.focus {
    box-shadow: none;
}
.footer-md .card-header{
    text-align: left;
    padding: 0;
    border: none;
    margin: 0!important;
}

.footer-box{
    margin-top: 40px;
    padding: 0 8vw;
}
.footer-head h4{
    font-size: 1.5rem;
    color: #333;
    margin-right: 15px;
}
.footer-head ul li{
    margin: 0 15px;
}
.footer-head ul li a img{
    width: 30px;
}
.footer-head ul li:first-child{
    position: relative;
}
.footer-head ul li:first-child:hover img{
    display: block;
}
.footer-head .wechat img{
    width: 140px;
    position: absolute;
    left: 0;
    top: -140px;
    display: none;
    z-index: 999;
}

.footer-body-box{
    margin-top: 40px;
}
.footer-body-box ul li{
    /*margin: 15px 60px 15px 0;*/
    margin: 15px 5vw 15px 0;
}
.footer-body-box ul li h5{
    color: #333;
    margin-bottom: 30px;
}
.footer-body-box ul li a{
    text-decoration: none;
    color: #333;
}
.footer-body-box .footer-logo>img{
    width: 212px;
}
.copyright ul li{
    margin-right: 20px;
}
.copyright ul li:last-child{
    margin-right: 0;
}
.copyright ul li a{
    color: #999;
    text-decoration: none;
    font-size: 0.8rem;
}
.copyright p{
    color: #999;
    font-size: 0.8rem;
}
/*---------------footer结束---------------*/

@media (min-width: 1px){
    .nav-center li{
        line-height: 40px;
    }
    .nav-center .summary{
        display: none!important;
    }
    .banner{
        margin-top: -160px;
        /*margin-top: 0;*/
    }
    .banner-msg>span{
        display: inline-block;
        width: 100%;
        font-size: 2.4rem;
        letter-spacing: 1rem;
    }
    .tencent-desc{
        font-size: 1rem;
    }
    .desc-img>ul{
        justify-content: flex-start!important;
    }
    .desc-img>ul>li img{
        width: 240px;
        height: 180px;
    }
    .desc-img>ul>li p{
        font-size: 1.2rem;
    }
    .link-tab h4{
        font-size: 1rem;
    }
    .link-area{
        display: none !important;
    }
    .link-area-md{
        display: block;
    }
    .resp-area{
        flex-direction: column-reverse;
    }
    .resp-banner-box{
        width: auto;
        margin-top: 40px;
    }
    .resp-text{
        width: 100%;
        position: static;
        text-align: center;
    }
    .resp-text>div{
        position: static;
    }
    .footer-banner{
        position: static;
        display: flex;
        flex-direction: column-reverse;
        text-align: center;
    }
    .footer-text{
        position: static;
        margin-bottom: 40px;
    }
    .footer-md{
        display: block;
    }
    .footer-body-box{
        display: block!important;
    }
    .footer-body-box{
        display: none!important;
    }
    .copyright ul li:nth-child(1){
        display: none;
    }
    .copyright ul li:nth-child(2){
        display: none;
    }
    .copyright ul li:nth-child(3){
        display: none;
    }
    .copyright ul{
        justify-content: left;
    }
    .copyright p{
        text-align: left;
    }
}
@media(min-width: 576px){
    .copyright ul li:nth-child(1){
        display: block;
    }
    .copyright ul li:nth-child(2){
        display: block;
    }
    .copyright ul li:nth-child(3){
        display: block;
    }
}
@media (min-width: 768px) {
    .nav-center li {
        width: 70px;
        line-height: 74px;
    }
    .navbar-expand-md .navbar-nav .js-nav-link {
        padding-right: 0.1rem;
        padding-left: 0.1rem;
    }
    .nav-center .summary{
        display: block!important;
    }
    .banner{
        margin-top: -84px;
        /*margin-top: 0;*/
    }
    .banner-msg>span{
        width: 300px;
        font-size: 3.5rem;
    }
    .tencent-desc{
        font-size: 1.3rem;
    }
    .desc-img>ul>li img{
        width: 100%;
        height: 90%;
    }
    .desc-img>ul{
        justify-content: center!important;
    }
    .desc-img>ul>li p{
        font-size: 1.5rem;
    }
    .link-tab h4{
        font-size: 1.1rem;
    }
    .link-area{
        height: 580px !important;
        display: block !important;
    }
    .link-area-md{
        display: none;
    }
    .copyright ul{
        justify-content: center;
    }
    .copyright p{
        text-align: center;
    }
}
@media (min-width: 992px) {
    .nav-center li{
        width: 90px;
    }
    .desc-img>ul>li img{
        width: 100%;
        height: 90%;
    }
    .link-tab h4{
        font-size: 1.3rem;
    }
    .link-area{
        height: 780px !important;
    }
    .resp-area{
        flex-direction: row;
    }
    .resp-banner-box{
        width: 50%;
        margin-top: 0;
    }
    .resp-text{
        width: 50%;
        position: relative;
        text-align: left;
    }
    .resp-text>div{
        position: absolute;
        left: 10%;
        top: 35%;
    }
    .footer-banner{
        position: relative;
        display: block;
        /*flex-direction: column-reverse;*/
        text-align: left;
    }
    .footer-text{
        position: absolute;
        margin-bottom: 0;
    }
    .footer-md{
        display: none;
    }
    .footer-body-box{
        display: flex!important;
    }
}
@media (min-width: 1200px) {
    .nav-center li{
        width: 120px;
    }
    .desc-img>ul>li img{
        width: 100%;
        height: 100%;
    }
    .link-tab h4{
        font-size: 1.5rem;
    }

}